That's great! You're welcome to add that figure if you like. Whatever you prefer. I think it would more strongly indicate the known capabilities if you were to remove the word 'potentially.' Perhaps you can say something stronger. Simply "However it allows GraphTerm to work with interactive shells for any platform, such as R or node.js" would make it pretty clear that you've demonstrated it with those platforms. Even stronger, you could add something like "This functionality has been demonstrated for R, ....."